Engine mounting



Feb. 19,

Original Filed Sept. 2 1949 R. WALSH 2,781,991

ENGINE MOUNTING 5 Sheets-Sheet l INVENTOR.

ATTOR EY Fell 19, 1957 R. WALSH 2,781,991

ENGINE MOUNTING Original Filed Sept. 2, 1949 5 Sheets-Sheet 2 y 1INVENTOR. 5 E my PM )fw 7% /PMM ATTORNEY Feb. 19, 1957 R. WALSH2,781,991

ENGINE MOUNTING Original Filed Sept. 2. 1949 5 Sheets-Sheet 5 INVENTOR.BY MFM Feb. 19, 1957 R, WALSH 2,781,991

ENGINE MOUNTING Original Filed Sept. 2, 1949 l 5 Sheets-Sheet 4 IJl]-icT E INVENTOR.

Feb 19, 1957 R. wALsH 2,781,991

ENGINE MOUNTING Uriginal Filed Sept. 2, 1949 5 Sheets-Sheet 5 Tij. llicl. la

INVENToR.

4 ram/y United States Patent ENGINE MOUNTING Robert Walsh, Wilmington,Del., assignor to ACF Industries, Incorporated, a corporation of NewJersey Original applications, September 2., 1949, Serial N- 113,727, nowPatent No. 2,719,488, dated October 4, 1955, Iand February 20, 1951,Serial No. 211,962, now Patent No. 2,717,746, dated September 13, 1955.Divided and this application April 30, 1952, Serial No. 285,281

3 Claims. (Cl. 248-.-22)

This invention relates to railway locomotives and more particularlytomountings `for the power units in locomotives, "This application is adivision of my application Serial Numbers 113,727 tiled September 2,1949 and 211,962 tiled February 20, 1951, now Patent Nos. 2,719,488` and2,717,746.

An object of the invention resides in completely damping the engine of alocomotive so that it is free to vibrate without transmitting the forcesgenerated thereby to the framing and` remote accessories. v

A fur-ther object of the invention is to mount andarrangeauxiliary'power, units, each consisting of a Diesel engine,generator and accessories, so that they can be readily moved intoand outof the locomotive.

Another object of the invention resides in the arrangement of. auxiliarypower units and associated accessories Within a lomrriotiveV to mosteliiciently utilize the available space and toprovide maximumaccessibility.

These and other objects of the invention will be apparent to thoseskilled in the art from a study of the following description andaccompanying drawings, in which:

Fig. 1 is a diagrammatic plan view of the interior of thelocomotve- Fig.2 isa vertical sectional view of a locomotive illustrating the relativeposition of a mounted auxiliary ename..

' Eig. 3 isa top View of one of the auxiliary power unit mountings.

Fig. 41s A,an end view of the mounting shown in Fig. 3.

Fig. 5 is a side elevational vview of the mounting shown in Figs. 3 and4.

Eig. 6 is a plan view of another of the auxiliary engine mountings.

Fig. 7 is a side elevational view of the mountings shown in Fig. 6.

Fig. 8 is an end view of the mountings shown in Figs. 6 and 7.

Fig. 9 is a plan view of the cradle for the auxiliary engine units.

Fig. 10 is a side elevational View of the cradle.

Fig. 11 is an elevational view of one end of the cradle.

Fig. 12 is an elevational view of the other end of the cradle.

As shown in Fig. l, two similar traction power plants A and B arearranged in longitudinal alignment on the longitudinal center line ofthe locomotive power compartment. Two similar auxiliary power plants Cand D are arranged adjacent the remote ends of the traction power plantswith their longitudinal center lines extending transversely of thelocomotive.

The auxiliary power plants C and D are similarly supported at their endson mountings 147 and 148 carried on a rigid carrier base or cradlestructure 151'). Each of such power plants with its cradle and mountingsis movable as a unit endwise through opposite openings E in the sides ofthe locomotive as indicated by dotted lines rice in Fig. l. The cradlestructures are similar and include a pair of channel members 152,extending longitudinally of the associated power plant, and bracemembers 154 having upstanding ends and extending transversely betweenand welded at their sides to the channel members. The top flanges of thechannel members are slit transversely adjacent one end and the endportions 156 are bent upwardlyy at an angle to each other. Angular restplate 139 extends across the cradle and is welded on the bent up en-dportions 156 of the channel top flanges and seat plates 157 are weldedon portions 156. The channel members are reinforced by boxing members149 under the bent up ends of the top anges. The upturned ends of member154 at the other end of the cradle has curved recesses to accommodate aportion of the power unit. Supporting arms 151 are welded in and projectfrom the channel members in'alignment with the two upturned ends ofmember 154 and each set of arms has acarrier angle bracket 153 weldedthereon on which seat plates 196 are welded. The ends of the channelsadjacent arms 151 are boxed in by plates 143. The lower flanges ofcradle members 152 are formed with holes 169 for detachably securingythe auxiliary power unit to the ilooring by bolts or the like.

There are two similar resilient mountings 147, shown in detail in Figs.3 to 5, for one end of each auxiliary power plant. `Each mounting 147includes an anchor structure comprised of plate 173 adapted to bedetachably fixed on seat plate 157 of the cradle, spaced plates 158doweled to plate 173, spaced inverted L-shaped angle members 160 securedon the plates 158 and angularly disposed plates 162 xed at their upperends to the tops of the angle members and at their bottom edges toplates 158. At the inner end of the plate 173 is welded a vertical plate164 extending longitudinally of the power unit. An upper carrierstructure is comprised of plate 166 having a depending flange 168parallel to plate 164, plate 170 mounted on plate 166, and an anglemember 172 having its arms parallel with plates 162, secured to theunderface of plate 1.66. Resilient units comprised of rubber 174 bondedto metal plates 176 are arranged between and bonded to ange 168 andplate 1,64 and between angularly disposed plates 162 and angle member172. The units are secured between flange 168 and plate 164 by bolts 178and 179 and between angle member 172 and plates 162 by bolts 180 and181. The

` resilient-portion of the units are in shear and damp transverse andvertical vibrations of the power unit. Vertical vibration of the powerunit is also damped by rubber strips 182 and 184 located respectivelybelow the top anges of members 160 and above plate 166. Metal strips 186lie over rubber strips 184 and metal strips 188 lie under strips 182.Bolts 190 secure the strips in position with plates 166 and anglemembers 160. Such mounting provides a iloating support for limitingmovement of and damping vibrations at the exciter ends of the auxiliaryengines. The auxiliary engines have bracket arms 192 suitably secured onplates 170.

There are two similar resilient mountings 148, shown in detail in Figs.7 to 9, for the end remote from the exciter in each auxiliary powerunit. The anchor structure for each mounting 148 includes plates 175detach ably secured on seat plate 196, spaced plates 198 doweled onplates 175, inverted L-shaped members 260 secured to plates 198,angularly disposed plates 282 secured to plates 198 and the upper endsof the L-shaped members and vertical plate 204 secured across the frontend of plate 175. The carrier structure for each mounting 14S comprisesplat-e 2116 having a depending front ange 208, an angular member 207secured to the underface of plate 206 and an elevated rest member 210fixed on top of plate 206. Resilient units comprised of sheet rubber 212bonded to plates 214 are arranged between angle plates 202 and angularmember 207 and secured in such relation by bolts 216 and 217. Similarunits are arranged between iiange `20S and plate 204 and are so securedby bolts 218 and 219. Rubber strips 220 are placed on the top side edgcportions of plate 206 and rubber strips 222 are lplaced beneath the topflange of members 200. Metal strips 224 lie Outside of the rubber stripsand bolts 226 secure the strips in the position described. The enginelegs 228 are secured on members 210 and strips 220 and 222 act assnubbers to limit vertical movement of the carrier structure. Resilientunits between the angular member and angular plates are in shear and actas vibration dampers between the carrier and mounting structures. Theresilient units between ange 208 and plate 204 limit longitudinalmovement of the carrier structure and damp vibration.

The auxiliary power units are mounted on rubber and so that they willoat` Lines at right angles to plates 175 of mountings 14S of each powerunit will intersect substantially on the longitudinal center line of theauxiliary power units and with mountings 147 will provide a three pointsupport to allow limited rotation of the power unit on its normalrotation center resulting from operational forces. As previously stated,these auxiliary power units, their cradle and mountings can be removedand inserted through the side of the locomotive as a unitary structurewhen the means for fastening the cradle to the iioor is detached. Therear auxiliary power unit can be moved endwise through the sidelocomotive opening after being shifted to a position slightly behind itsmounted position but to remove or insert the forward auxiliary powerunit endwise from the locomotive it is necessary to detach portions ofthelocomotive side structure and, for this purpose, such structure isassembled so as to be readily detachable.

All connections between the power units C and D and locomotive partswith which they are associated are of a nature that will prevent enginevibration from being transmitted thereto and they are alsodisconnectable to allow removal of the units from the locomotive.

The invention may be modified in various respects as will occur to thoseskilled in the art and the exclusive use of all modifications as comewithin the scope of the appended claims is contemplated.

What is claimed is:

1. An engine cradle comprising a pair of spaced parallel channel membersdisposed with horizontal outwardly extending upper and lower anges,plate tie members extending horizontally between said channel membersadjacent the ends thereof and secured thereto at the inner ends of saidlower anges, said upper flanges being transversely slotted adjacent oneend of the cradle and said lower anges extending beyond said upper angesat the other end of said cradle, the free end portions of said upperflanges at the slotted ends thereof being similarly bent upwardly, aV-shaped mounting supporting plate seated on and secured to said freeend portions of said upper flanges, a pair of resilient engine mountingssecured to the opposite sides of said V-shaped mounting supporting plateadapted to support'one end of an engine, angle bracket means secured tosaid lower cradle anges at the end of said cradle opposite said V-shapedmounting supporting plate and beyond said upper flanges, a second pairof resilient engine mountings secured respectively to said angle bracketmeans and adapted to support the other end of said engine, and upwardlyextending flanges on said plate tie members extending transversely ofsaid channel members at the respective ends thereof and secured theretoto reinforce said cradle.

2. An engine cradle according to claim 1, wherein each of the resilientengine mountings comprises a base member, spaced supporting platessecured to said base member, an angle member upstanding from each ofsaid plates and having outwardly extending anges, angularly disposedplate members welded to the inner edges of said plates and to the anglemembers at the uppermost portion thereof, a carrier plate above andparallel to the supporting plates, a V-shaped member welded to theunderside of the carrier plate each leg thereof being parallel to one ofsaid angularly disposed plate members, and rubber units between andfixed to the legs of the V shaped member and the angularly disposedplate members.

3. An engine cradle according to claim 2, wherein resilient snubbermeans are connected to the outwardly extending angle member anges andthe carrier plate.

References Cited in the tile of this patent UNITED STATES PATENTS1,686,578 Slack Oct. 9, 1928 1,729,394 Lee Sept. 24, 1929 1,822,026 GuySept. 8, 1931 1,887,862 Simen Nov. 15, 1932 2,044,023 Trott `Tune 16,1936 2,195,873 Lord et al. Apr. 2, 1940 2,198,672 Lee Apr. 30, 19402,546,722 Carter Mar. 27,1951

FOREIGN PATENTS 431,874 Great Britain Aug. 22, 1934

